Featured Correct way to make 5% solution of sodium sesquicarbonate for Bronze Disease treatment.

Discussion in 'Ancient Coins' started by Theodosius, Jan 3, 2019.

  1. robinjojo

    robinjojo Supporter! Supporter

    Good luck, John.

    I'm currently treating a Cleopatra VII bronze. Apparently these bronzes are notoriously prone to bronze disease.
     
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  3. Kentucky

    Kentucky Supporter! Supporter

    Agree.
     
  4. Shieldbearer

    Shieldbearer New Member

    Theodosius, I have a question about covering the solution. Does it need to come in contact with the air to dissolve Bronze Disease? I have a very old bronze plate (about 16" across) which had a lot of the green stuff splotched across. I was able to gently scrape a lot of it off but want to get rid of all of it. The problem is, I don't have anything to cover such a large surface so I used saran wrap. The plastic fell onto the solution instead of stretching across and blocked out the air. Will the solution still work or does there need have contact with air above it? PLease let me know, thanks!
     
  5. Theodosius

    Theodosius Fine Style Seeker Supporter

    I do not believe that access to air is necessary for the solution to work. I believe the chemical reaction happens where the solution contacts the bronze disease. As long as you keep it wet then the solution should work.

    If you think about it, most of the coins we are treating are completely immersed in the water with no access to oxygen. But the reaction still takes place. Good luck with your treatment.

    John
     
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  6. Shieldbearer

    Shieldbearer New Member

    THANK YOU!
     
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